/*

   Copyright 2002  The Apache Software Foundation 

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.css.engine.value;

import org.w3c.dom.DOMException;
import org.w3c.dom.css.CSSPrimitiveValue;

/**
 * This class represents RGB colors.
 *
 * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
 * @version $Id$
 */
public class RGBColorValue extends AbstractValue {
    
    /**
     * The red component.
     */
    protected Value red;

    /**
     * The green component.
     */
    protected Value green;

    /**
     * The blue component.
     */
    protected Value blue;

    /**
     * Creates a new RGBColorValue.
     */
    public RGBColorValue(Value r, Value g, Value b) {
        red = r;
        green = g;
        blue = b;
    }

    /**
     * The type of the value.
     */
    public short getPrimitiveType() {
        return CSSPrimitiveValue.CSS_RGBCOLOR;
    }

    /**
     * A string representation of the current value. 
     */
    public String getCssText() {
        return "rgb(" +
            red.getCssText() + ", " +
            green.getCssText() + ", " +
            blue.getCssText() + ")";
    }

    /**
     * Implements {@link Value#getRed()}.
     */
    public Value getRed() throws DOMException {
        return red;
    }

    /**
     * Implements {@link Value#getGreen()}.
     */
    public Value getGreen() throws DOMException {
        return green;
    }

    /**
     * Implements {@link Value#getBlue()}.
     */
    public Value getBlue() throws DOMException {
        return blue;
    }

    /**
     * Returns a printable representation of the color.
     */
    public String toString() {
        return getCssText();
    }
}
